> what's our true purpose of existence
> is stupidity hereditary
> do people think about their actions & consequences before they commit a horrible act
> why did things take on a particular structure & etc. (ex: why do trees look the way they do & so on)
> how wide is space & is there anymore planets out there w/actual living beings

If that is a question of existentialism, then it'd probably be along the lines of "becoming fully human", so to speak. I don't really feel like expounding on this topic - much to say that I believe it is either a question asked out of sheer obliviousness or it is, indeed, an existential search for meaning in an otherwise pointless existence. You be the judge.

> is stupidity hereditary

Not hereditary. Infectious, yes. Stupid parents beget stupid children not due to genes, but due to the environment they seed their offspring in. Then again, I won't go into the semantics of "stupidity". If stupidity is meant to say "retardation", as in one who is mentally incapacitated due to a certain congenital disease, then yes - stupidity can be inherited. If "stupidity" is meant to refer to "intelligence", then the matter goes back to a case of nature versus nurture. I think it would be safe to say that both factors are involved - the extent of either one being at question.

> do people think about their actions & consequences before they commit a horrible act

This is a question of opinion. If you were to ask me, I think they do, unless they are acting on an impulse. What you mean by "horrible acts" is vague. To me, a horrible act is you eating a sandwich I bought at Oliver's for $5.99 for myself - in such a case, I wouldn't even care if you thought about your actions before you even thought of gobbling up my lunch. What's more important, for me, is whether or not you actually think AFTER the act itself, and realize what you have done. (sarcasm)

> why did things take on a particular structure & etc. (ex: why do trees look the way they do & so on)

Structure brings about function, and function brings about structure. In biology, living things take on a certain structure to facilitate a certain function - and in performing this function, it promotes the overall structure to be sustained. Trees grow the way they do (upward, more or less) because they require sunlight (at least most plants) for photosynthesis. A person's eyes are positioned in such a way as to promote binocular vision, which allows us to see in 3D, which means we have active depth perception, which is important as a predatory animal. On the other hand, when you cease to use a certain parts function in the manner of which it was meant to be used, the said part will begin to regress. In many instances, this is referred to as "atrophy", or simply the vestigial nature of unused parts. The maxim of nature remains true: "use it or lose it" Bottom line is structure begets function - function begets structure. Things are the way they are because it maximizes the function in a given structure for the said organism, and vice versa.

> how wide is space & is there anymore planets out there w/actual living beings

Infinite, supposedly. This is a question of speculation rather than inquiry. We can neither prove nor deny the existence of life on other planets. In addition, there is no physical means to determine the extent of the universe, in and of itself. Unless someone has already figured it out, then please, let me know.

Pain... Is real.. It is a chemical reaction in the brain created from nerves that send electrical pulses up into your brain.. the brain release a chemical that we interpret as pain. We adapted are nerves/Sense of touch from sensors on early fishes skin from before animals even lived on land. Knowing how evolution works aids one to understand why we sense and act the way we do now.

> what's our true purpose of existence
> is stupidity hereditary
> do people think about their actions & consequences before they commit a horrible act
> why did things take on a particular structure & etc. (ex: why do trees look the way they do & so on)
> how wide is space & is there anymore planets out there w/actual living beings

1) Self-defined, your purpose is what you make out of it, sadly we are limited somewhat by what our biological self wants and what our surroundings allow (you can't fly for instance ) and our surroundings can always be changed.
2) To some extent, yes
3) Yes but consequences and actions are relative
4) In the case of trees, gravity, sunlight and weather forces the tree to take that shape. For things in general because it is, given its circumstances, the only/best choice (in case of living things, best, in case of the grand canyon, the only choice).Physics decides everything, for instance a tree wouldn't want to have arched branches because it would have to balance the force of gravity on the point the branch is attached to the tree, that puts the tree in stress and risk (heavy rain/snow might break it etc..)

5) If by "space" you mean the universe, well we can only be certain of the observable universe (it is called that because it contains the farthest points in space that can reach us since the beginning, its distance being limited by the speed of light). As for life, we actually do not know, there are so many galaxies in the universe and so many solar systems in them again and so many planets in those systems that even if we assume that out of 1 billion planets only one can be like earth then there are millions of planets like the earth, then there is life elsewhere, but we have no reason to assume one way or the other, there may or may not be life...